Baseband Ramping Data Compression for Low-Noise Power Control
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Solution Overview
Problem
In mobile telecommunication devices, the transmission of ramping data from the digital baseband processing unit to the analog baseband or RF processing unit results in noise and increased data processing burden due to the large quantity of data transmitted through a serial interface, which affects the output power control and memory capacity.
Innovation Solution
The method involves extracting difference values of ramping data and transmitting these as sample difference ramping data with a smaller bit number, reducing the transmission amount and noise, while the analog baseband processing unit generates the ramping up/down signal based on the received data to control the output power level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large quantity of ramping data is transmitted through the serial interface, then the output power control is improved, but noise is generated and the data processing burden increases
Solution Approach 1:
The patent extracts only the essential information from the ramping data by calculating difference values between consecutive ramping samples. Instead of transmitting the complete ramping profile data, only the differences are transmitted through the serial interface, which reduces data volume and minimizes noise while preserving the ability to reconstruct the full ramping profile at the receiving end.
2Measurement precision
If a large quantity of ramping data is transmitted through the serial interface, then the output power control is improved, but the data processing burden is increased
Solution Approach 1:
The patent extracts only the essential information from the ramping data by calculating difference values between consecutive ramping samples. Instead of transmitting the complete ramping profile data, only the differences are transmitted through the serial interface, which reduces data volume and minimizes noise while preserving the ability to reconstruct the full ramping profile at the receiving end.
Solution Approach 2:
The patent changes the representation parameters of the ramping data by transforming the absolute ramping values into difference values. This parameter transformation reduces the data width required for transmission and simplifies the processing burden while maintaining the integrity of the power control information.
3Object-affected harmful factors
If the bit number of transmitted ramping data is reduced, then the noise and memory capacity requirements are reduced, but the data accuracy may be compromised
Solution Approach 1:
The patent creates a compressed representation (copy) of the ramping data in the form of difference values. The receiving end can reconstruct the original ramping profile by accumulating these difference values, effectively creating a lossless compressed copy that requires fewer bits for transmission while maintaining full data accuracy.
Data Source
AI summary
A mobile telecommunication device includes a digital baseband processing unit and an analog baseband processing circuit. The digital baseband processing unit is configured to extract a difference value of current ramping data of ramping data of ramping samples of a ramping profile from previous ramping data, the current ramping data and the previous ramping data having a first bit number, and to transmit the difference value to the analog baseband processing unit as sample difference ramping data having a second bit number which is smaller than a first bit number. The analog baseband processing unit configured to receive the sample difference ramping data, and to generate a ramping up/down signal of the first bit number based on the sample difference ramping data, wherein the ramping up/down signal controls an output power level of the mobile telecommunication device.